Scalable frequency band operation in wireless communication systems

• US 8,045,512 B2
• Filed: 10/27/2005
• Issued: 10/25/2011
• Est. Priority Date: 10/27/2005
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Vijayan, Rajiv, Gorokhov, Alexei, Agrawal, Avneesh, Ulupinar, Fatih, Khandekar, Aamod, Teague, Edward Harrison
• Primary Examiner(s): DOAN, PHUOC HUU
• Application Number:
  US11/261,805
• Publication Number:
  US 20070097908A1
• Time in Patent Office: 2,189 Days
• Field of Search: 370/329, 370/335, 370/206
• US Class Current: 370/329
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 5/023 Multiplexing of multicarrier modulation signals multicarrier modulation H04L27/2601
• CPC Class Codes: H04W 48/12 using downlink control channel

Abstract

To support mobile stations that are not capable of demodulating the entire bandwidth or that can be made to demodulate less than the entire bandwidth, a system, apparatus and method are provided to schedule users on less than all of the bandwidth. Further, certain users can be scheduled on more of the bandwidth than others.

Claims

1. A processing system comprising:

an input port;

an output port; and

a processor configured to;

transmit, on a first carrier, a first control channel; and

transmit, on a second carrier within a common sector with the first carrier, a second control channel transmission,

wherein the first control channel transmission and the second control channel transmission include information sufficient to support communication with its access terminal without utilizing information contained in another control channel transmission in another carrier,

wherein the first control channel transmission and the second control channel transmission are transmitted during substantially the same time frame and

wherein the processor is further configured to transmit a superframe preamble that spans each of the first carrier and second carrier prior to transmitting the first control channel transmission and the second control channel transmission.

2. The processing system of claim 1, wherein the processor is further configured to transmit the first control channel transmission and the second control channel transmission synchronously.

3. The processing system of claim 1, wherein the processor is further configured to transmit the first control channel transmission and the second control channel transmission asynchronously.

4. The processing system of claim 1, wherein each of the first carrier and second carrier comprises a bandwidth of 5 MHz.

5. The processing system of claim 1, wherein the processor is further configured to transmit a superframe preamble for each of the first carrier and second carrier prior to transmitting the first control channel transmission and the second control channel transmission.

6. The processing system of claim 1, wherein the processor is further configured to transmit symbol rate hopping transmissions over the first carrier.

7. The processing system of claim 1, wherein the processor is further configured to transmit block hopping transmissions over the first carrier.

8. The processing system of claim 1, wherein the processor is further configured to transmit a change carrier message on at least one of the first carrier and second carrier to instruct its access terminal to demodulate control messages of at least one other carrier.

9. The processing system of claim 8, wherein the change carrier message comprises a data transmission.

10. The processing system of claim 8, wherein the change carrier message comprises a control transmission.

11. The processing system of claim 1, wherein each of the first control channel transmission and the second control channel transmission comprises assignment information for access terminals communicating only on that carrier.

12. The processing system of claim 1, wherein only one of the first control channel transmission and the second control channel transmission comprises assignment information for access terminals communicating on multiple carriers.

13. The processing system of claim 1, wherein each of the first control channel transmission and the second control channel transmission comprises power control information for access terminals communicating on its carrier.

14. The processing system of claim 1, wherein one of the first control channel transmission and the second control channel transmission comprises power control information for access terminals communicating on multiple carriers.

15. A method of wireless communication within a common sector comprising:

transmitting, on a first carrier, a first control channel transmission; and

transmitting, on a second carrier a second control channel transmission,

wherein the first control channel transmission and the second control channel transmission include information sufficient to support communication with its access terminal without utilizing information contained in another control channel transmission in another carrier,

wherein the first control channel transmission and the second control channel transmission are transmitted during substantially the same time frame and

wherein the processor is further configured to transmit a superframe preamble that spans each of the first carrier and second carrier prior to transmitting the first control channel transmission and the second control channel transmission.

16. The method of claim 15, wherein the first control channel transmission and the second control channel transmission are synchronous.

17. The method of claim 15, wherein the first control channel transmission and the second control channel transmission are asynchronous.

18. The method of claim 15, wherein each of the first carrier and second carrier comprises a bandwidth of 5 MHz.

19. The method of claim 15, further comprising transmitting a change carrier message on at least one of the first carrier and second carrier to instruct an access terminal to demodulate control messages of at least one other carrier.

20. The method of claim 19, wherein the change carrier message comprises a data transmission.

21. The method of claim 19, wherein the change carrier message comprises a control transmission.

22. The method of claim 15, wherein each of the first control channel transmission and the second control channel transmission comprises assignment information for access terminals communicating only on that carrier.

23. The method of claim 15, wherein only one of the first control channel transmission and the second control channel transmission comprises assignment information for access terminals communicating on multiple carriers.

24. The method of claim 15, wherein each of the first control channel transmission and the second control channel transmission comprises power control information for access terminals communicating on its carrier.

25. The method of claim 15, wherein one of the first control channel transmission and the second control channel transmission comprises power control information for access terminals communicating on multiple carriers.

26. A wireless communication apparatus configured to communicate within a common sector comprising:

means for transmitting, on a first carrier, a first control channel transmission; and

means for transmitting, on a second carrier, a second control channel transmission,

wherein the first control channel transmission and the second control channel transmission include information sufficient to support communication with its access terminal without utilizing information contained in another control channel transmission in another carrier,

wherein the first control channel transmission and the second control channel transmission are transmitted during substantially the same time frame and

wherein the processor is further configured to transmit a superframe preamble that spans each of the first carrier and second carrier prior to transmitting the first control channel transmission and the second control channel transmission.

27. The wireless communication device of claim 26, wherein the first control channel transmission and the second control channel transmission are synchronous.

28. The wireless communication device of claim 26, wherein the first control channel transmission and the second control channel transmission are asynchronous.

29. The wireless communication device of claim 26, further comprising means for transmitting a change carrier message on at least one of the first carrier and second carrier to instruct its access terminal to demodulate control messages of at least one other carrier.

30. The wireless communication device of claim 29, wherein the change carrier message comprises a data transmission.

31. The wireless communication device of claim 29, wherein the change carrier message comprises a control transmission.

32. The wireless communication device of claim 26, wherein each of the first control channel transmission and the second control channel transmission comprises assignment information for access terminals communicating only on that camer.

33. The wireless communication device of claim 26, wherein only one of the first control channel transmission and the second control channel transmission comprises assignment information for access terminals communicating on multiple carners.

34. The wireless communication device of claim 26, wherein each of the first control channel transmission and the second control channel transmission comprises power control information for access terminals communicating on its carrier.

35. The wireless communication device of claim 26, wherein of the first control channel transmission and the second control channel transmission comprises power control information for access terminals communicating on multiple carriers.

36. A computer-readable medium embodying a program of instructions executable by a processor to perform a method of wireless communication within a common sector, comprising:

transmitting, on a first carrier, a first control channel transmission; and

transmitting, on a second carrier, second control channel transmission,

wherein the first control channel transmission and the second control channel transmission include information sufficient to support communication with its access terminal without utilizing information contained in another control channel transmission in another carrier,

wherein the first control channel transmission and the second control channel transmission are transmitted during substantially the same time frame and

wherein the processor is further configured to transmit a superframe preamble that spans each of the first carrier and second carrier prior to transmitting the first control channel transmission and the second control channel transmission.